I think Flo Pro and Moto Blue do. Not sure if any of the vendors here care either. I'm not saying other brands don't, I just am unsure of others. I mentioned those two because they are the "cheaper" exhaust systems and sometimes thats cause the are straight through systems. RPMOutlet carries one of those, i just can't remember which one. hate to say it but I know Flo Pro is prevelant on Ebay.
Hopefully they'll pipe up and get you taken care of.
Just a thought, but maybe they include enough pipe (if its a universal application system) to substitute the muffler with left over pieces from other areas of the system. The places these extra lengths could be taken from could be the tail pipe where you could cut off over a foot if you put a long enough tip on. And also from the middle section that would be long enough for a CC/LB application. Between those two places I would think you could come up with a couple feet of pipe pieced together to replace a muffle in the system.
A forum community dedicated to Chevrolet and GMC diesel truck owners and enthusiasts. Come join the discussion about duramax engines, performance, builds, modifications, classifieds, troubleshooting, maintenance, and more!